US Bridges

Ia 187 over Stream

Fair

Buchanan County, Iowa · 0.2 Mi. N of Jct. SR C57 · Structure no. 000000000083340

Built
1960
65 years old
Condition
Fair
inspected June 2023
Type
Culvert
Concrete Continuous
Length
35 ft
2 main spans
Daily traffic
1,560
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 187 over Stream is a concrete continuous culvert carrying Ia 187 over Stream in Buchanan County, Iowa. It was built in 1960, so it is 65 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,560 vehicles a day, roughly 15% of them trucks, projected to reach 1,560 by 2043. The structure is 35 ft (10.7 m) long. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesIa 187
CrossesStream
Location0.2 Mi. N of Jct. SR C57
RouteState Highway 187
CountyBuchanan County
StateIowa
Coordinates42.61952, -91.6473
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27 US tons
Inventory rating20 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 20
Structure length35 ft (10.7 m)
Longest span17 ft (5.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,560 (2022)
Projected traffic1,560 by 2043
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ia 187 over Stream built?

It was built in 1960, making it 65 years old in 2025.

What condition is Ia 187 over Stream in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.

How much traffic does Ia 187 over Stream carry?

About 1,560 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is Ia 187 over Stream?

The structure is 35 ft (10.7 m) long with a longest span of 17 ft (5.2 m).

Who owns Ia 187 over Stream?

It is owned by the State Highway Agency.